logs setup

src/interfaces/utils.ts

@@ -5,6 +5,7 @@ import { Position } from "../entities/Position";
 import { EmployeePosMaster } from "../entities/EmployeePosMaster";
 import { EmployeePosition } from "../entities/EmployeePosition";
 import { In } from "typeorm";
+import { RequestWithUser } from "../middlewares/user";
 export function calculateAge(start: Date, end = new Date()) {
   if (start.getTime() > end.getTime()) return null;
 
@@ -172,3 +173,39 @@ export async function removeProfileInOrganize(profileId: string, type:string) {
       .execute();
   }
 }
+//logs
+export type DataDiff = {
+  before: any;
+  after: any;
+};
+
+export type LogSequence = {
+  action: string;
+  status: "success" | "error";
+  description: string;
+  query?: any;
+  request?: {
+    method?: "GET" | "POST" | "PUT" | "DELETE" | "PATCH";
+    url?: string;
+    payload?: string;
+    response?: string;
+  };
+};
+
+export function setLogDataDiff(req: RequestWithUser, data: DataDiff) {
+  req.app.locals.logData.dataDiff = {
+    before: JSON.stringify(data.before),
+    after: JSON.stringify(data.after),
+  };
+}
+
+export function addLogSequence(req: RequestWithUser, data: LogSequence) {
+  if (!req?.app?.locals?.logData?.sequence) {
+    req.app.locals.logData.sequence = [];
+  }
+  req.app.locals.logData.sequence = req.app.locals.logData.sequence.concat(data);
+}
+
+export function editLogSequence(req: RequestWithUser, index: number, data: LogSequence) {
+  req.app.locals.logData.sequence[index] = data;
+}

src/middlewares/logs.ts

@@ -0,0 +1,80 @@
+import { NextFunction, Request, Response } from "express";
+import { Client } from "@elastic/elasticsearch";
+
+if (!process.env.ELASTICSEARCH_INDEX) {
+  throw new Error("Require ELASTICSEARCH_INDEX to store log.");
+}
+
+const ELASTICSEARCH_INDEX = process.env.ELASTICSEARCH_INDEX;
+
+const LOG_LEVEL_MAP: Record<string, number> = {
+  debug: 4,
+  info: 3,
+  warning: 2,
+  error: 1,
+  none: 0,
+};
+
+const elasticsearch = new Client({
+  node: `${process.env.ELASTICSEARCH_PROTOCOL}://${process.env.ELASTICSEARCH_HOST}:${process.env.ELASTICSEARCH_PORT}`,
+});
+
+async function logMiddleware(req: Request, res: Response, next: NextFunction) {
+  if (!req.url.startsWith("/api/")) return next();
+
+  let data: any;
+
+  const originalJson = res.json;
+
+  res.json = function (v: any) {
+    data = v;
+    return originalJson.call(this, v);
+  };
+
+  const timestamp = new Date().toISOString();
+  const start = performance.now();
+
+  req.app.locals.logData = {};
+
+  res.on("finish", () => {
+    if (!req.url.startsWith("/api/")) return;
+    let system = "org";
+    if (req.url.startsWith("/api/v1/org/metadata/")) system="metadata";
+    if (req.url.startsWith("/api/v1/org/auth/authRoleAttr/")) system = "admin";
+    if (req.url.startsWith("/api/v1/org/auth/authRoleAttr/")) system = "admin";
+    if (req.url.startsWith("/api/v1/org/auth/authRoleAttr/")) system = "admin";
+    if (req.url.startsWith("/api/v1/org/auth/authRoleAttr/")) system = "admin";
+
+    const level = LOG_LEVEL_MAP[process.env.LOG_LEVEL ?? "debug"] || 4;
+
+    if (level === 1 && res.statusCode < 500) return;
+    if (level === 2 && res.statusCode < 400) return;
+    if (level === 3 && res.statusCode < 200) return;
+
+    const obj = {
+      logType: res.statusCode >= 500 ? "error" : res.statusCode >= 400 ? "warning" : "info",
+      ip: req.ip,
+      systemName: system,
+      startTimeStamp: timestamp,
+      endTimeStamp: new Date().toISOString(),
+      processTime: performance.now() - start,
+      host: req.hostname,
+      method: req.method,
+      endpoint: req.url,
+      responseCode: String(res.statusCode === 304 ? 200 : res.statusCode),
+      responseDescription: data?.message,
+      input: (level === 4 && JSON.stringify(req.body, null, 2)) || undefined,
+      output: (level === 4 && JSON.stringify(data, null, 2)) || undefined,
+      ...req.app.locals.logData,
+    };
+
+    elasticsearch.index({
+      index: ELASTICSEARCH_INDEX,
+      document: obj,
+    });
+  });
+
+  return next();
+}
+
+export default logMiddleware;